"In this tiny ebook I'm going to show you how to get started writing 6502 assembly language. [...] I think it's valuable to have an understanding of assembly language. Assembly language is the lowest level of abstraction in computers - the point at which the code is still readable. Assembly language translates directly to the bytes that are executed by your computer's processor. If you understand how it works, you've basically become a computer magician." More of this, please.

Ah, so they do something, well, illegal (honestly, "and you install them at your own legal risk" is silly, it would likely never result in prosecution of individual users; OTOH, they, VICE, choose to distribute those ROMs, and via sourceforge of all places) - hoping it will go under the radar... I wonder how long that might last, with by far the most popular C64 emulator - maybe Tulip isn't that persnickety after all.

PS. It seems Tulip is even non-existing by now... http://en.wikipedia.org/wiki/Tulip_Computers (historically ironic how Tulip just copied the BIOS of IBM PC) - and they got rid of Commodore stuff even earlier. Oh well, I guess the whole legal mess with (slices of) C= corpse might be not so bad.